I may precede you may precede she may precede we may precede you may precede they may precede
V-ing form
I may be preceding you may be preceding she may be preceding we may be preceding you may be preceding they may be preceding
Perfect
I may have preceded you may have preceded she may have preceded we may have preceded you may have preceded they may have preceded
V-ing perfect
I may have been preceding you may have been preceding she may have been preceding we may have been preceding you may have been preceding they may have been preceding
Negation
Simple form
I mayn't precede you mayn't precede she mayn't precede we mayn't precede you mayn't precede they mayn't precede
V-ing form
I mayn't be preceding you mayn't be preceding she mayn't be preceding we mayn't be preceding you mayn't be preceding they mayn't be preceding
Perfect
I mayn't have preceded you mayn't have preceded she mayn't have preceded we mayn't have preceded you mayn't have preceded they mayn't have preceded
V-ing perfect
I mayn't have been preceding you mayn't have been preceding she mayn't have been preceding we mayn't have been preceding you mayn't have been preceding they mayn't have been preceding
Interrogative form
Simple form
may I precede? may you precede? may she precede? may we precede? may you precede? may they precede?
V-ing form
may I be preceding? may you be preceding? may she be preceding? may we be preceding? may you be preceding? may they be preceding?
Perfect
may I have preceded? may you have preceded? may she have preceded? may we have preceded? may you have preceded? may they have preceded?
V-ing perfect
may I have been preceding? may you have been preceding? may she have been preceding? may we have been preceding? may you have been preceding? may they have been preceding?
Interro-negative form
Simple form
mayn't I precede? mayn't you precede? mayn't she precede? mayn't we precede? mayn't you precede? mayn't they precede?
V-ing form
mayn't I be preceding? mayn't you be preceding? mayn't she be preceding? mayn't we be preceding? mayn't you be preceding? mayn't they be preceding?
Perfect
mayn't I have preceded? mayn't you have preceded? mayn't she have preceded? mayn't we have preceded? mayn't you have preceded? mayn't they have preceded?
V-ing perfect
mayn't I have been preceding? mayn't you have been preceding? mayn't she have been preceding? mayn't we have been preceding? mayn't you have been preceding? mayn't they have been preceding?